The Acquatic Hemisphere

We generally understand hemispheres as the two halves of the world that end up North and South of the Equator. But having grown up in Argentina surrounded mostly by water, I started thinking of a different way to split the world namely into an acquatic hemisphere and a land hemisphere. As it usually happens nowadays even ideas that seem very original are not and googling I discovered that somebody had already developed this concept. He calls it the continental hemisphere and the oceanic hemisphere. When I was a child I used to think that if you sailed East from Argentina you could go all the way around the world and after endless miles over water you would end up next door… in Chile. Never going over any other country. In the Southern Hemisphere, water is almost all there is.